Tenma 72-6851 & 72-6853 Instruction manual
Installation
Mains Operating Voltage
This instrument operates from a nominal 115V mains supply. Check that the local supply meets
the AC Input requirement given in the Specification.
Mains Lead
WARNING! THIS APPARATUS MUST BE EARTHED.
Any interruption of the mains earth conductor inside or outside the instrument will make the
instrument dangerous. Intentional interruption is prohibited.
Mounting
This instrument is suitable both for bench use and rack mounting. It is delivered with feet for
bench mounting. The front feet include a tilt mechanism for optimal panel angle.
A rack kit for mounting one or two of these Half-width 3U high units in a 19” rack is available from
the Manufacturers.
Ventilation
These instruments are very efficient but nevertheless can generate significant heat at full power.
The supplies rely on convection cooling only and it is therefore important that ventilation is never
restricted if performance and safety are to be maintained. If the supplies are mounted in a
restricted space, e.g. a 19 inch rack, then adequate ventilation must be ensured by using, for
example, a fan tray.
Connections
The load should be connected to the positive (red) and negative (black) front panel OUTPUT
terminals. These safety terminals will accept 4mm plugs, bare-ended wires or spade terminals
without exposing any metal parts and are rated to 30A.
The load can alternatively be connected to the rear panel OUTPUT screw terminals where the
SENSE connections are also located. Refer to the Connection to the Load section in the Manual
Operation chapter for full details.
The terminal marked
is connected to the chassis and safety earth ground.
6
www.tenma.com
electronic components distributor
